NBK-M
Service in hazardous areas
To operate the transducer in hazardous areas, the measuring circuit must contain
the appropriate intrinsic safety barrier to separate intrinsically safe circuits from
non-intrinsically safe circuits. Specially designed liquid level transducers with a
total resistance of 40 k Ohm are required for this purpose. Only the resistive
transducer (option W) can be installed in hazardous locations. Resistive
transducers with transmitter and the magnetostrictive transducers are not suitable
for installation in hazardous locations.
CAUTION: Installers must be familiar with all local and national codes
concerning electrical device installation in hazardous locations.
7.3. Resistive Level Transducer with Transmitter (option ..M..)
Ensure that the electrical supply lines are de-energized.
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To avoid faults caused by electrical fields from other circuits, the cables should
not be laid in conduits with power cables.
Unscrew cover and pull supply lines through the cable gland.
Connect the transmitter according to the terminal connection diagram below.
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16-32 V DC
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NBK-M_manual_3-5-04.doc
